1. Mini size 2. Combined use of wind closed port + sonic port, the driving effect is more significant 3. When installed on the car, the speed is 40 yards and above, the airflow will pass through the product, produce screams and ultrasonic waves have a physical driving effect on the animals, and will not hurt the animals. 4. Acrylic adhesive on the back, good adhesion, leaving no marks 5. Material: ABS 6. Suitable models: most cars can be used 7. Size: about 3x1.7x2.5 cm/piece 8. Weight: about 16.5g/pair
